FREE DCA QUESTIONS THAT WILL GET YOU THROUGH THE EXAM

Free DCA Questions That Will Get You Through the Exam

Free DCA Questions That Will Get You Through the Exam

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Tags: Exam DCA Blueprint, DCA Latest Test Cram, DCA Exam Overviews, New DCA Exam Question, Exam DCA Simulations

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Docker Certified Associate (DCA) certification exam is a globally recognized credential that validates a candidate's knowledge and skills in working with Docker containers and containerized applications. Docker Certified Associate (DCA) Exam certification is designed for IT professionals who are looking to advance their careers in DevOps, software development, and cloud computing. The DCA certification exam covers a wide range of topics, including container basics, Docker installation and configuration, container orchestration, Docker networking, security, and troubleshooting.

The DCA certification is a valuable asset for IT professionals who want to demonstrate their proficiency in Docker. It provides an objective measure of their skills and knowledge, which can be used to enhance their professional credibility and advance their careers. Docker Certified Associate (DCA) Exam certification also provides access to a global community of Docker experts and resources, which can be leveraged to stay up-to-date with the latest trends and best practices in the field. Overall, the DCA Certification is an excellent way for IT professionals to validate their expertise in Docker and differentiate themselves in a competitive job market.

Docker platform is a powerful tool for building, shipping, and running applications in containers. Containers are lightweight, portable, and scalable, making them an ideal solution for modern application development and deployment. The DCA certification exam tests the candidate’s knowledge of the Docker platform, including Docker Engine, Docker Swarm, Docker Compose, and other Docker tools and services.

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Docker Certified Associate (DCA) Exam Sample Questions (Q113-Q118):

NEW QUESTION # 113
You want to provide a configuration file to a container at runtime. Does this set of Kubernetes tools and steps accomplish this?
Solution: Turn the configuration file into a configMap object, use it to populate a volume associated with the pod, and mount that file from the volume to the appropriate container and path.

  • A. No
  • B. Yes

Answer: A

Explanation:
Explanation
= Mounting the configuration file directly into the appropriate pod and container using the
.spec.containers.configMounts key is not a valid way to provide a configuration file to a container at runtime. The .spec.containers.configMounts key does not exist in the Kubernetes API1. The correct way to provide a configuration file to a container at runtime is to use a ConfigMap2. A ConfigMap is a Kubernetes object that stores configuration data as key-value pairs. You can create a ConfigMap from a file, and then mount the ConfigMap as a volume into the pod and container. The configuration file will be available as a file in the specified mount path3. Alternatively, you can also use environment variables to pass configuration data to a container from a ConfigMap4. References:
* PodSpec v1 core
* Configure a Pod to Use a ConfigMap
* Populate a Volume with data stored in a ConfigMap
* Define Container Environment Variables Using ConfigMap Data


NEW QUESTION # 114
Will this Linux kernel facility limit a Docker container's access to host resources, such as CPU or memory?
Solution: seccomp

  • A. No
  • B. Yes

Answer: B

Explanation:
Explanation
= Seccomp is a Linux kernel feature that allows you to restrict the actions available within the container. By using a seccomp profile, you can limit the system calls that a container can make, thus enhancing its security and isolation. Docker has a default seccomp profile that blocks some potentially dangerous system calls, such as mount, reboot, or ptrace. You can also pass a custom seccomp profile for a container using the --security-opt option. Seccomp can limit a container's access to host resources, such as CPU or memory, by blocking or filtering system calls that affect those resources, such as setpriority, sched_setaffinity, or mlock. References:
* Seccomp security profiles for Docker
* Hardening Docker Container Using Seccomp Security Profile


NEW QUESTION # 115
Following the principle of least privilege, which of the following methods can be used to securely grnt access to the specific user to communicate to a Docker engine? (Choose two.)

  • A. Utilize the '--host 0.0.0.0:2375' option to the Docker daemon to listen on port 2375 over TCP on all interfaces
  • B. Utilize openssl to create TLS client and server certificates, configuring the Docker engine to use with mutual TLS over TCP.
  • C. Give the user root access to the server to allow them to run Docker commands as root.
  • D. Add the user to the 'docker' group on the server or specify the groue with the '--group' Docker daemon option.
  • E. Utilize the '--host 127.0.0.1:2375' option to the Docker daemon to listen on port 2375 over TCP on localhost

Answer: B,D


NEW QUESTION # 116
Your organization has a centralized logging solution, such as Splunk.
Will this configure a Docker container to export container logs to the logging solution?
Solution: Set the log-driver and log-oPt keys to values for the logging solution (Splunk) In the daemon.json file.

  • A. No
  • B. Yes

Answer: B


NEW QUESTION # 117
Will This command list all nodes in a swarm cluster from the command line?
Solution. 'docker swarm nodes'

  • A. No
  • B. Yes

Answer: A

Explanation:
Explanation
This command does not list all nodes in a swarm cluster from the command line. The docker swarm command manages swarm operations, such as initializing or joining a swarm, updating the swarm configuration, etc. It does not show information about nodes or services. To list all nodes in a swarm cluster from the command line, you need to use docker node ls command. This command shows information about all the nodes that are part of the swarm, such as their ID, hostname, status, availability, etc. References:
https://docs.docker.com/engine/reference/commandline/swarm/,
https://docs.docker.com/engine/reference/commandline/node_ls/


NEW QUESTION # 118
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